That is sgen stotal ssys ssurr 0 subsystem 1 n stotal

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: sfer. That is, Sgen Stotal Ssys Ssurr 0 Subsystem 1 N ∆ Stotal = Σ ∆ Si > 0 Subsystem 2 i =1 Subsystem 3 Subsystem N FIGURE 7–6 The entropy change of an isolated system is the sum of the entropy changes of its components, and is never less than zero. Isolated system boundary m=0 Q=0 W=0 (7–11) where the equality holds for reversible processes and the inequality for irreversible ones. Note that Ssurr refers to the change in the entropy of the surroundings as a result of the occurrence of the process under consideration. Since no actual process is truly reversible, we can conclude that some entropy is generated during a process, and therefore the entropy of the universe, which can be considered to be an isolated system, is continuously increasing. The more irreversible a process, the larger the entropy generated during that process. No entropy is generated during reversible processes (Sgen 0). Entropy increase of the universe is a major concern not only to engineers but also to philosophers, theologians, economists, and environmentalists since entropy is viewed as a measure of the disorder (or “mixed-up-ness”) in...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online